Computer simulation of steady polymer melt spinning

1981 ◽  
Vol 21 (13) ◽  
pp. 844-853 ◽  
Author(s):  
Del Kenneth Gagon ◽  
Morton M. Denn
Keyword(s):  
Computer Simulation ◽  
Melt Spinning ◽  
Polymer Melt

scholarly journals Multiscale Simulation of Polymer Melt Spinning by Using the Dumbbell Model

2017 ◽  
Vol 44 (5) ◽  
pp. 265-280 ◽  
Author(s):  
Takeshi Sato ◽  
Kazuhiro Takase ◽  
Takashi Taniguchi
Keyword(s):  
Melt Spinning ◽  
Polymer Melt ◽  
Multiscale Simulation ◽  
Dumbbell Model

scholarly journals Synthesis of SiC Based Fibers with Continuous Pore Structure by Melt- Spinning and Controlled Curing Method

2009 ◽  
Vol 66 ◽  
pp. 5-8 ◽  
Author(s):  
Kenichiro Kita ◽  
Masaki Narisawa ◽  
Hiroshi Mabuchi ◽  
Masayoshi Itoh ◽  
Masaki Sugimoto ◽  
...  
Keyword(s):  
Pore Structure ◽  
Melt Spinning ◽  
Polymer Melt ◽  
Fiber Spinning ◽  
Hydrogen Gas ◽  
Structure Control ◽  
Gas Source ◽  
Pore Structures ◽  
Curing Method ◽  
The Individual

Silicon carbide (SiC) based fibers with continuous pore structures were synthesized by the precursor method using a polycarbosilane (PCS) and polymethylhydrosiloxane (PMHS) polymer blends. The pore formation process can be explained by hydrogen gas dissolution in the polymer melt and desaturation process of the dissolved gas during the fiber spinning. We investigated the effect of PMHS additives with different chemical and physical natures on the obtained pore structures, because PMHS decomposition process played a role of hydrogen gas source. The individual polymer melts were characterized by viscosity measurement, gas chromatograph analysis and thermogravimetric (TG) analysis in order to obtain details of pore structure control.

scholarly journals In-Situ X-Ray Characterization of Fiber Structure during Melt Spinning

2008 ◽  
Vol 3 (3) ◽  
pp. 155892500800300 ◽  
Author(s):  
Michael S. Ellison ◽  
Paulo E. Lopes ◽  
William T. Pennington
Keyword(s):  
Melt Spinning ◽  
Simultaneous Detection ◽  
Polymer Melt ◽  
Polymer Chains ◽  
Degree Of Crystallinity ◽  
Structure Evolution ◽  
X Ray ◽  
Spinning Process

The properties of a polymer are strongly influenced by its morphology. In the case of fibers from semi-crystalline polymers this consists of the degree of crystallinity, the spacing and alignment of the crystalline regions, and molecular orientation of the polymer chains in the amorphous regions. Information on crystallinity and orientation can be obtained from X-ray analysis. In-situ X-ray characterization of a polymer during the melt spinning process is a major source of information about the effects of material characteristics and processing conditions upon structure evolution along the spinline, and the final structure and properties of the end product. We have recently designed and installed an X-ray system capable of in-situ analysis during polymer melt spinning. To the best of our knowledge this system is unique in its capabilities for the simultaneous detection of wide angle and small angle X-ray scattering (WAXS and SAXS, respectively), its use of a conventional laboratory radiation source, its vertical mobility along the spinline, and its ability to simulate a semi-industrial environment. Setup, operation and demonstration of the capabilities of this system is presented herein as applied to the characterization of the melt spinning of isotactic poly(propylene). Crystallinity and crystalline orientation calculated from WAXS patterns, and lamellar long period calculated from SAXS patterns, were obtained during melt spinning of the polymer along the spinline.

Equilibrium Dynamics of an Associating Polymer Melt in Narrow Slits by Computer Simulation

2007 ◽  
Vol 111 (16) ◽  
pp. 4141-4149 ◽  
Author(s):  
Marco Malvaldi ◽  
Samantha Bruzzone ◽  
Guido Raos ◽  
Giuseppe Allegra
Keyword(s):  
Computer Simulation ◽  
Polymer Melt ◽  
Equilibrium Dynamics ◽  
Associating Polymer

The preparation of polymer melt samples for computer simulation studies

1994 ◽  
Vol 100 (8) ◽  
pp. 6011-6018 ◽  
Author(s):  
David Brown ◽  
Julian H. R. Clarke ◽  
Motoi Okuda ◽  
Takao Yamazaki
Keyword(s):  
Computer Simulation ◽  
Polymer Melt ◽  
Simulation Studies ◽  
Computer Simulation Studies
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